widely applied for construction works for instance road,dam,farm irrigation,and house building,and is also suitable for sand,gravel and mixed soils along foundations,walls and abutments in narrow trenches. the contour dimension(mm)is 1100x430x780(pc-77), 1160x420x920(pc-90), 1200x480x900(pc-120). Max Travelling speed(m/min) is 15-20(pc-77), 20-25(pc-90), 20-25(pc-120), Engine power is Gasoline Engine 5-5.5ps, centrifugal force(kn) is 10.5(pc-70), 13(pc-90). the weight is 65kg for pc-77, 90kg for pc-90.